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(Solved): A spherical balloon is being inflated. Find the rate (in f(t^(2))/(f)t ) of increase of the surface ...



A spherical balloon is being inflated. Find the rate (in

f(t^(2))/(f)t

) of increase of the surface area (

S=4\pi r^(2)

) with respect to the radius

r

when

r

is each of the following. (a)

3ft

f(t^(2))/(f)t

(b)

7ft

f(t^(2))/(f)t


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